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100Instruments and controlsControl indicators
The control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. Depending on the
equipment, the position of the control indicators may vary. When the
ignition is switched on, most control
indicators will illuminate briefly as a functionality test.
The control indicator colours mean:red=danger, important
reminderyellow=warning, information, faultgreen=confirmation of activationblue=confirmation of activationwhite=confirmation of activation
See all control indicators on different
instrument clusters 3 91.
Turn signal
O illuminates or flashes green.
Illuminates briefly
The parking lights are switched on.
Flashes
A turn signal or the hazard warningflashers are activated.
Rapid flashing: failure of a turn signal
light or associated fuse, failure of turn
signal light on trailer.
Bulb replacement 3 222, Fuses
3 232.
Turn signals 3 128.
Seat belt reminder Seat belt reminder on frontseats X for driver's seat illuminates or
flashes red in the instrument cluster.
k for front passenger seat illuminates
or flashes red in the centre console,
when seat is occupied.
Illuminates
After the ignition has been switched
on until the seat belt has been
fastened.Flashes
After having started the engine for a
maximum of 100 seconds until the
seat belt has been fastened.
Seat belt status on rear seats,
base level instrument cluster
X flashes or illuminates in the Driver
Information Centre.
Illuminates
After the ignition has been switched
on when the seat belt has been
fastened.
Flashes
After starting off when the seat belt is unfastened.
Fastening the seat belt 3 55.
Seat belt status on rear seats,
midlevel and uplevel instrument cluster X illuminates red or green or grey in
the instrument cluster, after the
ignition has been switched on.
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Instruments and controls117
■ Ride control systems
■ Driver assistance systems
■ Cruise control
■ Speed limiter
■ Adaptive cruise control
■ Forward collision alert
■ Collision imminent braking system
■ Parking assist systems
■ Lighting, bulb replacement
■ Adaptive forward lighting
■ Wiper/washer system
■ Doors, windows
■ Side blind spot alert
■ Traffic sign assistant
■ Lane departure warning
■ Load compartment, boot lid
■ Radio remote control
■ Electronic key system
■ Keyless starting
■ Seat belts
■ Airbag systems
■ Engine and transmission
■ Tyre pressure■ Diesel particle filter
■ Vehicle battery status
Messages in the
Colour-Info-Display
Some important messages may
appear additionally in the
Colour-Info-Display. Press the
multifunction knob to confirm a
message. Some messages only pop
up for a few seconds.
Warning chimes
When starting the engine or
whilst driving Only one warning chime will sound at
a time.
The warning chime regarding not
fastened seat belts has priority over
any other warning chime.
■ If seat belt is not fastened.
■ If a door or the tailgate is not fully closed when starting off.
■ If a certain speed is exceeded with parking brake applied.■ If adaptive cruise controldeactivates automatically.
■ If approaching a vehicle ahead too closely.
■ If a programmed speed or speed limit is exceeded.
■ If a warning message appears in the Driver Information Centre.
■ If the electronic key is not in the passenger compartment.
■ If the parking assist detects an object.
■ If an unintended lane change occurs.
■ If the diesel particle filter has reached the maximum filling level.
When the vehicle is parked and/ or the driver's door is opened ■ When the key is in the ignition switch.
■ With exterior lights on.
■ If the trailer hitch is not engaged.
Page 215 of 321

Vehicle care213Vehicle careGeneral Information...................213
Vehicle checks ........................... 214
Bulb replacement .......................222
Electrical system ........................232
Vehicle tools .............................. 239
Wheels and tyres .......................240
Jump starting ............................. 252
Towing ....................................... 254
Appearance care .......................257General Information
Accessories and vehicle
modifications
We recommend to use genuine parts and accessories and factory
approved parts specific for your
vehicle type. We cannot assess or
guarantee reliability of other products
- even if they have a regulatory or
otherwise granted approval.
Do not make any modifications to the
electrical system, e.g. changes of
electronic control units (chip tuning).Caution
When transporting the vehicle on
a train or on a recovery vehicle, the
mud flaps might be damaged.
Vehicle storage
Storage for a long period of time
If the vehicle is to be stored for several months:
■ Wash and wax the vehicle.
■ Have the wax in the engine compartment and underbody
checked.
■ Clean and preserve rubber seals.
■ Fill up fuel tank completely.
■ Change engine oil.
■ Drain washer fluid reservoir.
■ Check coolant antifreeze and corrosion protection.
■ Adjust tyre pressure to the value specified for full load.
■ Park vehicle in dry, well ventilated place. Engage first or reverse gear
or set selector lever to P. Prevent
the vehicle from rolling.
■ Do not apply parking brake.
Page 224 of 321
222Vehicle care
Wiper blade on the rear window
Lift the wiper arm. Press the two
catches on the arm, disengage the
wiper blade and remove.
Attach the wiper blade slightly angled
to the wiper arm and push until it
engages.
Lower wiper arm carefully.
Bulb replacement
Switch off the ignition and switch off
the relevant switch or close the doors.
Only hold a new bulb at the base! Do
not touch the bulb glass with bare
hands.
Use only the same bulb type for
replacement.
Replace headlight bulbs from within
the engine compartment.
Bulb check
After a bulb replacement switch on
the ignition, operate and check the
lights.Halogen headlights
Bi-Halogen Headlight (1) with one
bulb for low and high beam.
Sidelight/Daytime running light (2) .
Front turn signal light (3)
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Vehicle care223
Bi-Halogen Headlight (1)
On left vehicle side pull filling pipe out
of the windscreen washer fluid
container.
1. Rotate the cap anticlockwise and remove it.
2. Rotate the bulb holderanticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
3. Disengage the bulb holder from the plug connector by bending
apart slightly the retaining lug.
4. Replace the bulb and connect with the plug.
5. Insert the bulb holder, engaging the two lugs into the reflector and
rotate clockwise to secure.
6. Fit the cap and rotate clockwise.
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224Vehicle care
Sidelight/Daytime running light(2)
1. Rotate cap anticlockwise and withdraw from the reflector.
2. Press snap-in tongues togetherand move socket out of the
housing.
3. Remove the bulb from the socket by pulling.
4. Replace and insert new bulb into socket.
5. Insert the bulb socket into the housing and let engage.
6. Fit the cap and rotate clockwise.
Sidelight/Daytime running light with LEDs
On another version sidelight and
daytime running lights are designed
as LEDs. In case of defective have
LEDs replaced by a workshop.
Front turn light (3)
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Vehicle care225
1. Rotate bulb socket anti-clockwiseto disengage. Withdraw the bulb
socket from the housing.
2. Push bulb into socket slightly, rotate anti-clockwise and remove.
3. Replace and insert new bulb into socket by rotating clockwise.
4. Insert bulb socket in reflector, rotate clockwise to engage.
Xenon headlights9 Danger
Adaptive forward lighting system
uses Xenon headlights.
Xenon headlights work under
extremely high electrical voltage.
Do not touch. Have bulbs replaced by a workshop.
Bulbs for front turn signal and
corner lighting can be changed.
Sidelight/Daytime running lights are
designed as Light Emitting Diodes
(LEDs) and cannot be changed.
Corner lighting
1. Rotate the cap anticlockwise and remove it.
Page 228 of 321
226Vehicle care
2. Rotate the bulb holderanticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
3. Disengage the bulb from the plug connector by unlatching and
pulling.
4. Replace the bulb and connect bulb holder with the plug
connector.
5. Insert the bulb holder, engaging the two lugs into the reflector and
rotate clockwise to secure.
6. Fit the cap and rotate clockwise.
Front turn signal
1. Rotate the cap anticlockwise and remove it.
2. Rotate the bulb holderanticlockwise to disengage.
Withdraw the bulb holder from the
reflector.
3. Disengage the bulb holder from the plug connector by unlatching
and pulling.
4. Replace the bulb and connect bulb holder with the plug.
5. Insert the bulb holder, engaging the two lugs into the reflector androtate clockwise to secure.